/* ═══════════════════════════════════════════
   QR & BARCODE TOOLS — style.css
═══════════════════════════════════════════ */

:root {
  --page-bg:  #f4f4f5;
  --bg:       #ffffff;
  --bg2:      #f0f0f0;
  --bg3:      #f8f8f8;
  --border:   #d4d4d4;
  --text:     #1e1e1e;
  --text2:    #555555;
  --accent:   #5646F5;
  --accent2:  #4535e0;
  --accent-light: rgba(86,70,245,0.10);
  --sidebar:  #ececf1;
  --surface:  #ffffff;
  --surface2: #f0f0f0;
  --green:    #22c55e;
  --red:      #ef4444;
}

[data-theme="dark"] {
  --page-bg:  #141416;
  --bg:       #1e1e1e;
  --bg2:      #252526;
  --bg3:      #2d2d30;
  --border:   #3e3e42;
  --text:     #cccccc;
  --text2:    #888888;
  --accent:   #8b83f7;
  --accent2:  #5646F5;
  --accent-light: rgba(139,131,247,0.12);
  --sidebar:  #252526;
  --surface:  #1e1e1e;
  --surface2: #252526;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  display: flex; flex-direction: column; height: 100vh; overflow: hidden;
  background: var(--page-bg); font-size: 14px; color: var(--text);
}

/* ── Top Bar ── */
.top-bar { display: flex; align-items: center; gap: 12px; padding: 0 16px; height: 44px; background: #5646F5; color: #fff; flex-shrink: 0; z-index: 20; }
.top-bar-left { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.top-bar-back { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 1.1rem; line-height: 1; }
.top-bar-back:hover { color: #fff; }
.top-bar-title { font-size: 0.95rem; font-weight: 600; white-space: nowrap; }
.top-bar-right { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.top-btn { background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.25); color: #fff; width: 32px; height: 32px; border-radius: 6px; cursor: pointer; font-size: 1rem; display: flex; align-items: center; justify-content: center; transition: background 0.15s; }
.top-btn:hover { background: rgba(255,255,255,0.3); }

/* ── App Body ── */
.app-body { flex: 1; display: flex; overflow: hidden; }

/* ── Sidebar ── */
.sidebar {
  width: 200px; min-width: 170px; background: var(--surface);
  border-right: 1px solid var(--border); display: flex;
  flex-direction: column; overflow-y: auto; flex-shrink: 0;
}
.sidebar-top-nav { display: flex; padding: 10px 8px 4px; gap: 4px; }
.grp-nav-btn {
  flex: 1; padding: 8px 4px; border: 1px solid var(--border);
  background: var(--bg2) !important; border-radius: 6px; cursor: pointer;
  font-size: 16px; color: var(--text); transition: all 0.15s; font-family: inherit;
}
.grp-nav-btn:hover, .grp-nav-btn.active { background: var(--accent) !important; border-color: var(--accent) !important; color: #fff !important; }

.sidebar-groups { flex: 1; overflow-y: auto; }
.sidebar-group + .sidebar-group { border-top: 1px solid var(--border); }
.grp-hdr {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 10px 14px 5px; font-size: 10px; font-weight: 700;
  letter-spacing: 0.8px; text-transform: uppercase; color: var(--text2);
  cursor: pointer; user-select: none; background: none !important; border: none !important;
  font-family: inherit; text-align: left; transition: color 0.15s;
}
.grp-hdr:hover { color: var(--accent) !important; }
.grp-chevron { font-size: 8px; flex-shrink: 0; margin-left: 4px; transition: transform 0.2s; }
.sidebar-group.collapsed .grp-chevron { transform: rotate(-90deg); }
.sidebar-group.collapsed .grp-tools { display: none; }

.tab-btn {
  width: 100%; padding: 7px 12px 7px 22px; text-align: left;
  background: none !important; border: none !important; border-radius: 0;
  cursor: pointer; font-size: 13px; color: var(--text); font-family: inherit;
  transition: background 0.12s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.tab-btn:hover  { background: var(--accent-light) !important; color: var(--accent) !important; }
.tab-btn.active { background: var(--accent) !important; color: #fff !important; font-weight: 600; }

/* ── Tool Area ── */
.tool-area { flex: 1; overflow: hidden; display: flex; flex-direction: column; background: var(--bg); }
.tool-panel { display: none; flex-direction: column; gap: 14px; flex: 1; overflow-y: auto; padding: 22px 24px; min-height: 0; }
.tool-panel.active { display: flex; }

.panel-title { font-size: 1.15rem; font-weight: 700; color: var(--accent); padding-bottom: 10px; border-bottom: 2px solid var(--border); flex-shrink: 0; }
.tool-desc   { font-size: 0.88rem; color: var(--text2); line-height: 1.5; flex-shrink: 0; }

/* ── Form ── */
.form-group { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }
.form-row   { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; flex-shrink: 0; }
.btn-row    { display: flex; gap: 8px; flex-wrap: wrap; flex-shrink: 0; align-items: center; }

.io-label { font-size: 12px; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: 0.5px; }

.io-area {
  border: 1px solid var(--border); border-radius: 4px; padding: 10px;
  font-family: 'Segoe UI', sans-serif; font-size: 13px; background: var(--bg);
  color: var(--text); outline: none; line-height: 1.5; resize: vertical; width: 100%;
}
.io-area:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }

button {
  padding: 7px 16px; border: 1px solid var(--accent2); background: var(--accent);
  color: #fff; border-radius: 6px; cursor: pointer; font-size: 13px;
  font-family: inherit; transition: background 0.15s, opacity 0.15s; white-space: nowrap;
}
button:hover    { opacity: 0.88; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-secondary {
  background: var(--bg2) !important; border: 1px solid var(--border) !important; color: var(--text) !important;
}
.btn-secondary:hover { background: var(--bg3) !important; opacity: 1; }

select, input[type="number"], input[type="text"], input[type="email"],
input[type="tel"], input[type="password"], input[type="range"] {
  padding: 5px 8px; border: 1px solid var(--border); border-radius: 4px;
  font-size: 13px; background: var(--bg); color: var(--text); outline: none; font-family: inherit;
}
select:focus, input[type="number"]:focus, input[type="text"]:focus { border-color: var(--accent); }
input[type="range"] { padding: 0; cursor: pointer; accent-color: var(--accent); }
input[type="color"] { width: 36px; height: 28px; padding: 2px; border: 1px solid var(--border); border-radius: 4px; cursor: pointer; background: var(--bg); }
.checkbox-label { display: flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; color: var(--text); user-select: none; }

.tool-msg      { font-size: 12px; color: var(--accent); }
.tool-msg.err  { color: #e05252; }
.tool-msg.ok   { color: #4caf50; }

/* ── Slider row ── */
.slider-row { display: flex; align-items: center; gap: 10px; }
.slider-row input[type=range] { flex: 1; }
.slider-val { min-width: 40px; font-size: 12px; color: var(--text2); text-align: right; }

/* ════════════════════════════════════════
   QR TYPE TABS
════════════════════════════════════════ */
.qr-types { display: flex; flex-wrap: wrap; gap: 4px; flex-shrink: 0; }
.qr-type-btn {
  padding: 5px 14px; border: 1px solid var(--border); border-radius: 20px;
  background: var(--bg2) !important; color: var(--text) !important; font-size: 12px; cursor: pointer; font-family: inherit; transition: all 0.15s;
}
.qr-type-btn.active { background: var(--accent) !important; border-color: var(--accent2) !important; color: #fff !important; font-weight: 600; }
.qr-type-btn:hover:not(.active) { background: var(--accent-light) !important; color: var(--accent) !important; opacity: 1; }

.qr-input-block { display: none; flex-direction: column; gap: 8px; flex-shrink: 0; }
.qr-input-block.active { display: flex; }

/* ════════════════════════════════════════
   QR / BARCODE PREVIEW
════════════════════════════════════════ */
.qr-layout { display: flex; gap: 20px; flex-wrap: wrap; align-items: flex-start; }
.qr-controls { flex: 1; min-width: 260px; display: flex; flex-direction: column; gap: 12px; }
.qr-preview-box {
  flex-shrink: 0; display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
}
#qr-output   { line-height: 0; min-width: 128px; min-height: 128px; display: flex; align-items: center; justify-content: center; }
#qr-output canvas, #qr-output img { border-radius: 2px; }
.qr-hint     { font-size: 11px; color: var(--text2); text-align: center; }

.bc-preview-box {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 16px; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
}
#bc-output { background: #fff; border-radius: 4px; overflow: hidden; }

/* ════════════════════════════════════════
   LOGO OVERLAY SECTION
════════════════════════════════════════ */
.logo-section {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 10px 12px; background: var(--bg2); border: 1px solid var(--border); border-radius: 6px;
}
.logo-preview { width: 40px; height: 40px; border-radius: 4px; border: 1px solid var(--border); object-fit: contain; background: #fff; }

/* ════════════════════════════════════════
   BATCH RESULTS
════════════════════════════════════════ */
.batch-info { font-size: 12px; color: var(--text2); }
.batch-grid { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.batch-item {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 12px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; max-width: 200px;
}
.batch-item .batch-label { font-size: 11px; color: var(--text2); text-align: center; word-break: break-word; max-width: 180px; }
.batch-item canvas, .batch-item img { border-radius: 2px; }
.batch-item button { font-size: 11px !important; padding: 3px 10px !important; margin-top: 2px; }

/* ════════════════════════════════════════
   QR SCANNER
════════════════════════════════════════ */
.scanner-area {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px; display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.scanner-video {
  width: 100%; max-width: 400px; border-radius: 6px; border: 2px solid var(--border);
  background: #000; aspect-ratio: 1 / 1; object-fit: cover;
}
.scan-result-box {
  width: 100%; max-width: 400px; padding: 12px; background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; font-size: 13px;
  word-break: break-all; color: var(--text); min-height: 60px; line-height: 1.5;
}
.scan-result-box a { color: var(--accent); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* ── Hamburger menu button (hidden on desktop, shown on mobile) ── */
.menu-toggle { display: none; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}
.sidebar-overlay.active { display: block; }

@media (max-width: 768px) {
  .menu-toggle { display: inline-flex; }
  .sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 260px;
    min-width: unset;
    height: 100vh;
    z-index: 100;
    transition: left 0.3s ease;
    box-shadow: 4px 0 20px rgba(0,0,0,0.3);
    border-right: none;
  }
  .sidebar.open { left: 0; }
  .sidebar-top-nav { flex-wrap: wrap; }
  .tool-panel { padding: 16px; }
  .qr-layout { flex-direction: column; }
  .btn-row { flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 480px) {
  .top-bar-title { font-size: 0.85rem; }
  .top-bar { padding: 0 10px; height: 40px; }
  .tool-panel { padding: 12px 10px; }
  .panel-title { font-size: 1rem; }
  .qr-preview-box { max-width: 100%; }
}

/* ── Size presets ──────────────────────────── */
.size-presets { display: flex; gap: 6px; margin-top: 4px; }
.btn-sm { padding: 2px 10px; font-size: 11px; border-radius: 4px; cursor: pointer;
  background: var(--tool-bg); color: var(--text); border: 1px solid var(--border); }
.btn-sm:hover { background: var(--accent); color: #fff; }

/* ── Generation history ────────────────────── */
.history-list { max-height: 200px; overflow-y: auto; }
.history-item { display: flex; align-items: center; gap: 8px; padding: 4px 8px;
  font-size: 12px; border-bottom: 1px solid var(--border); }
.h-num { color: var(--accent); font-weight: 600; min-width: 28px; }
.h-type { background: var(--tool-bg); padding: 1px 6px; border-radius: 3px; font-size: 10px; text-transform: uppercase; }
.h-time { margin-left: auto; opacity: 0.5; font-size: 10px; }